Larkin, Mary, author
McGraw-Hill, 2011
Buku Teks
Radley, Alan
Thousand Oaks Sage , 1994
Buku Teks
Roche Products Limited., 1964
Buku Teks
Herlihy, Barbara, author
W.B. Saunders, 2000
Buku Teks
Waugh, Anne, author
Churchill Livingstone , 2006
Buku Teks